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The Wall Street Journal's online magazine Market Watch recently ran a story on two new approaches to overcoming degenerative eye diseases with artificial retinas.

The story came across my desk by virtue of the fact that one of the companies goes by the name Nano Retina.

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It turns out the transistor has a positive side. A team at the University of Washington, in Seattle, has created the first solid-state transistor that controls the flow of protons instead of electrons. The device could help pave the way for gadgets that can interface at a molecular level with living systems, since biology commonly employs protons and ions to perform work and transmit information.

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Scientists have demonstrated that monkeys using a brain-machine interface can not only control a computer with their minds but also "feel" the texture of virtual objects in a computer.

This is the first-ever demonstration of bidirectional interaction between a primate brain and a virtual object.

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Imagine a world in which your medicine cabinet notices that you are due for a prescription refill and calls it in. A sensor implanted under your skin detects a fluid buildup in your lungs and alerts your doctor, who decides your heart medication needs an adjustment and contacts the pharmacist to change your dosage.

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Earlier this month, Jerome Radcliffe stood onstage at the Black Hat Technical Security Conference in Las Vegas, hacked into the insulin pump that was affixed to his abdomen by a thin tube, and completely disabled it. Radcliffe is diabetic, and the pump is one component in an insulin-delivery system that monitors and stabilizes his glucose levels to keep him alive.

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